It's been six months since Katie Holmes was first linked to Jamie Foxx, and despite denials from both sides, the hookup talk continues on. The latest comes from Page Six, which says the actress recently jetted out to the west coast to spend time with the Oscar winner at this mansion.

"Katie flew private to California to stay with Jamie at his home around the Grammys [on Jan. 26]," says a source, adding that they also rendezvoused during Super Bowl weekend but appeared separately at the game. The pair are also purported to have enjoyed a New Year's meet-up in Miami.

They're supposedly keeping things "under wraps" and "treading carefully" because Foxx remains friendly with his "Collateral" co-star, Tom Cruise, who was said to be blindsided by Holmes' masterful 2012 divorce filing.

"Jamie is being careful because he has a lot of respect for Tom," explains the spy.

Rumors of a romance first surfaced in August, when Holmes, 35, and Foxx, 46, danced a charity fete in the Hamptons (he supposedly made his interest known to Suri's mom by giving her butt a squeeze).

The actor denied the dating rumblings, insisting they were "one hundred percent not true. In fact, it's quite hilarious because we simply danced at a charity event along with a lot of other people."

The official word from Katie's rep on the most recent whispers: She was in California to meet with a director about a movie, not to visit Foxx.